Apply suggestions from code review

Co-Authored-By: Alan Wu <XrXr@users.noreply.github.com>

Author: mame

en/news/_posts/2020-03-19-json-dos-cve-2020-10663.md

@@ -6,17 +6,17 @@ date: 2020-03-19 22:00:00 +0900
 lang: en
 ---
 
-There is unsafe object creation vulnerability in the json bundled with ruby. This vulnerability has been assigned the CVE identifier [CVE-2020-10663](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-10663). We strongly recommend to upgrade JSON gem.
+There is an unsafe object creation vulnerability in the json gem bundled with Ruby. This vulnerability has been assigned the CVE identifier [CVE-2020-10663](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-10663). We strongly recommend upgrading the json gem.
 
 ## Details
 
 When parsing certain JSON documents, the JSON gem (including bundled versions with the Ruby packages) can be coerced in to creating arbitrary object in a target system.
 
 This is the same issue as [CVE-2013-0269](https://www.ruby-lang.org/en/news/2013/02/22/json-dos-cve-2013-0269/).  The previous fix was incomplete, which addressed `JSON.parse(user_input)`, but didn't address some other styles of JSON parsing including `JSON(user_input)` and `JSON.parse(user_input, nil)`.
 
-See [CVE-2013-0269](https://www.ruby-lang.org/en/news/2013/02/22/json-dos-cve-2013-0269/) in detail.  Note that the issue was exploitable to cause a Denial of Service by creating many garbage-uncollectable Symbol objects, but this kind of attack is no longer valid because Symbol objects are now garbage-collectable.  However, creating arbitrary object may cause fatal consequence depending upon the application code.
+See [CVE-2013-0269](https://www.ruby-lang.org/en/news/2013/02/22/json-dos-cve-2013-0269/) in detail.  Note that the issue was exploitable to cause a Denial of Service by creating many garbage-uncollectable Symbol objects, but this kind of attack is no longer valid because Symbol objects are now garbage-collectable.  However, creating arbitrary objects may cause severe security consequences depending upon the application code.
 
-Please update json gem 2.3.0 or later.  You can use `gem update json` to update it.  If you are using bundler, please add `gem "json", ">= 2.3.0"` to your `Gemfile`.
+Please update the json gem to version 2.3.0 or later.  You can use `gem update json` to update it.  If you are using bundler, please add `gem "json", ">= 2.3.0"` to your `Gemfile`.
 
 ## Affected versions